Monitoring the Neapolitan Volcanic Area Using an Advanced Multiple Reference Station RTK DGPS Technique

Giovanni Pugliano, Franco Obrizzo, Folco Pingue, Vincenzo Sepe, Paul Alves and Gérard Lachapelle

Abstract:	The Neapolitan Volcanic area, located in the southern sector of the Campania Plain (Italy), includes the Somma- Vesuvius volcano, the Campi Flegrei area and the islands of Ischia and Procida. The presence of the active volcanoes in a very dense area needs continuous monitoring of the dynamics to study the pre-eruptive processes. Ground deformation represents an important precursor because it is linked to magma overpressure and migration through the rehological parameters characterizing the volcanic rocks. Thanks to a greater rapidity, real-time kinematic (RTK) positioning can be useful for periodic surveys and for quickly solutions to field problems in periods of crisis. In particular, it is of great interest to effectively use the high density of permanent stations of the Osservatorio Vesuviano-INGV GPS surveillance network, located in the Campi Flegrei volcanic district. This paper presents the results of a test based on the use of an advanced post-mission multiple reference station RTK DGPS positioning method, namely MultiRefPM™. In general, this multiple reference station approach can provide a position accuracy considerably better than the standard single reference station approach. The resulting position accuracy is smaller than the usual volcanic deformation and can therefore be used as a cost-effective monitoring technique.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	1703 - 1712
Cite this article:	Pugliano, Giovanni, Obrizzo, Franco, Pingue, Folco, Sepe, Vincenzo, Alves, Paul, Lachapelle, Gérard, "Monitoring the Neapolitan Volcanic Area Using an Advanced Multiple Reference Station RTK DGPS Technique," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 1703-1712.
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